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author | David S. Miller <davem@davemloft.net> | 2019-08-27 14:23:31 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2019-08-27 14:23:31 -0700 |
commit | 68aaf4459556b1f9370c259fd486aecad2257552 (patch) | |
tree | 99d92536a3263634969be6b70a96facea85a0df1 /mm/memcontrol.c | |
parent | nfp: add AMDA0058 boards to firmware list (diff) | |
parent | Merge tag 'nfs-for-5.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs (diff) | |
download | linux-dev-68aaf4459556b1f9370c259fd486aecad2257552.tar.xz linux-dev-68aaf4459556b1f9370c259fd486aecad2257552.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in r8169, bug fix had two versions in net
and net-next, take the net-next hunks.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r-- | mm/memcontrol.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 6f5c0c517c49..26e2999af608 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3260,6 +3260,60 @@ static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css, } } +static void memcg_flush_percpu_vmstats(struct mem_cgroup *memcg) +{ + unsigned long stat[MEMCG_NR_STAT]; + struct mem_cgroup *mi; + int node, cpu, i; + + for (i = 0; i < MEMCG_NR_STAT; i++) + stat[i] = 0; + + for_each_online_cpu(cpu) + for (i = 0; i < MEMCG_NR_STAT; i++) + stat[i] += raw_cpu_read(memcg->vmstats_percpu->stat[i]); + + for (mi = memcg; mi; mi = parent_mem_cgroup(mi)) + for (i = 0; i < MEMCG_NR_STAT; i++) + atomic_long_add(stat[i], &mi->vmstats[i]); + + for_each_node(node) { + struct mem_cgroup_per_node *pn = memcg->nodeinfo[node]; + struct mem_cgroup_per_node *pi; + + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) + stat[i] = 0; + + for_each_online_cpu(cpu) + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) + stat[i] += raw_cpu_read( + pn->lruvec_stat_cpu->count[i]); + + for (pi = pn; pi; pi = parent_nodeinfo(pi, node)) + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) + atomic_long_add(stat[i], &pi->lruvec_stat[i]); + } +} + +static void memcg_flush_percpu_vmevents(struct mem_cgroup *memcg) +{ + unsigned long events[NR_VM_EVENT_ITEMS]; + struct mem_cgroup *mi; + int cpu, i; + + for (i = 0; i < NR_VM_EVENT_ITEMS; i++) + events[i] = 0; + + for_each_online_cpu(cpu) + for (i = 0; i < NR_VM_EVENT_ITEMS; i++) + events[i] += raw_cpu_read( + memcg->vmstats_percpu->events[i]); + + for (mi = memcg; mi; mi = parent_mem_cgroup(mi)) + for (i = 0; i < NR_VM_EVENT_ITEMS; i++) + atomic_long_add(events[i], &mi->vmevents[i]); +} + #ifdef CONFIG_MEMCG_KMEM static int memcg_online_kmem(struct mem_cgroup *memcg) { @@ -4682,6 +4736,12 @@ static void __mem_cgroup_free(struct mem_cgroup *memcg) { int node; + /* + * Flush percpu vmstats and vmevents to guarantee the value correctness + * on parent's and all ancestor levels. + */ + memcg_flush_percpu_vmstats(memcg); + memcg_flush_percpu_vmevents(memcg); for_each_node(node) free_mem_cgroup_per_node_info(memcg, node); free_percpu(memcg->vmstats_percpu); |